CN1325825C

CN1325825C - Valve with metal seal between coupled parts of its body

Info

Publication number: CN1325825C
Application number: CNB018232574A
Authority: CN
Inventors: 卢恰诺·博诺米; 山德罗·拉巴伊奥利; 达尼埃莱·瓦尔代斯图洛
Original assignee: Bonomi Valve Machine Tool Co ltd
Current assignee: Bonomi Valve Machine Tool Co ltd
Priority date: 2001-05-14
Filing date: 2001-05-14
Publication date: 2007-07-11
Anticipated expiration: 2021-05-14
Also published as: JP2004525323A; ES2266200T3; EP1421306B1; DE60121232D1; WO2002093051A1; CN1537208A; US20040144945A1; ATE331909T1; DE60121232T2; EP1421306A1

Abstract

The present invention relates to a valve particularly a ball valve. The vale comprises a body, wherein the body is formed from at least two metal components (11, 12) which are mutually and tightly screwed, the components of a valve body are provided with respective circular surfaces (13, 14), and the circular surfaces are designed into a matching state at the time of assembly. One or a plurality of annular connection parts (15, 16) are arranged on the annular surfaces (13, 14), and are tightly assembled together, and metal seal among the assembled components is formed in the mode of matching and cooperation.

Description

The valve that between the connected element of its main body, has metallic seal

Technical field

The present invention relates to a class valve, the main body of this type of valve comprises two metal partss at least, and they are as linking together in the ball valve, and ball valve comprises spherical valve of rotation and the valve seal cover that is screwed on the main body.

Background technique

In these valves, the seal arrangement between the connected element of main body is formed by elastomeric insert type gasket seal usually, and in any case, they are the add-on parts that add constantly in the valve assembling, and can not eliminate problems such as efficient, maintenance.

Summary of the invention

The purpose of this invention is to provide some valves, ball valve particularly, has metallic seal between two connected elements of their main bodys, and has the advantage of eliminating common additional seal pad, thereby simplify the assembling of valve, and can use any fluid,, guarantee durable effective sealing no matter be under all conditions of liquid or gas.In other words, the sealing that connects between the metal parts is to use the same material of making these parts, and obtain with these parts all-in-one-piece parts.

Therefore, the present invention proposes a kind of ball valve, its valve body is made up of two metal partss that are tightened in together, described two metal partss of this valve body have annular surface respectively, and this annular surface is designed to be assembled together when component-assembled, it is characterized in that, have one or more annular connecting parts on described two annular surfaces, these one or more annular connecting parts have the interlocking type geometrical shape, form metallic seal during assembling.

Annular connecting part can be taked various geometrical shapies, in any case and, can make by processing corresponding matching surface.

Description of drawings

By way of example, showed some examples of the metallic seal of valve body in the accompanying drawings, below will be to they more detailed in addition explanations.In the accompanying drawing:

Fig. 1 represents the cross section of two separated components of valve body, then proposes, is designed in order to be combined together the zoomed-in view with the part that forms seal arrangement according to invention first scheme at (A) with (B);

Fig. 2 represents the valve body assembled, at (C) and (D) then is aforementioned two magnification regions after two parts of valve body have tightened together;

The view of Fig. 3, (A) and (B) expression and Fig. 1, (A) are similar with (B's), still according to the alternative plan proposition of hermetic unit;

The view of Fig. 4, (C) and (D) expression and Fig. 2, (C) are similar with (D's), and existence and Fig. 3, (A) hermetic unit similar with (B); And

Fig. 5 and 6, (A), (B), (C), (D); 7 and 8, (A), (B), (C), (D); 9 and 10, (A), (B), (C), (D); 11 and 12, (A), (B), (C), (D) the similar view among expression and Fig. 1 and 2, (A), (B), (C), (D) respectively, but propose according to other schemes of hermetic unit.

Embodiment

The valve body 10 of ball valve shown in the drawings comprises an actual and normal main body 11, and it is designed to comprise rotates spherical valve (not shown), and has corresponding seal washer and the part that is called valve seal cover 12, and sealing cover 12 is screwed on the main body 11 coaxially.Main body 11 and valve seal cover 12 has

annular surface

13 and 14, and when they are screwed in a time-out tightly, these surfaces are designed to assembling.At the top on described surface one or more annular connecting

parts

15 and 16 are arranged respectively, in case they are assembled, just coupling forms the metallic seal between main body and the valve seal cover.

In the scheme shown in Fig. 1 and 2, coupling is limited by relative shoulder with

annular surface

13,14, in

case parts

11,12 are tightened in a time-out, they are axially pressing mutually.The annular connecting part that is used for metallic seal comprises venturi 15, and the convergence side of its tool is made on one of described annular surface 13, also comprises flange or prismatic annular projecture 16, and it is made on another surface 14, and designatedly is used for being stuck in venturi 15.

Equally, in the scheme shown in Fig. 3 and 4, coupling is limited by relative shoulder with

annular surface

13,14, simultaneously, the annular connecting part that is used for metallic seal comprises the planar annular 15 of inclination, and it is made on one of described surface 13, also comprises ring edge 16, it is made on the apparent surface 14, and is designed to match with described clinoplain.

Equally, in the scheme shown in Fig. 5 and 6, coupling limits with relative shoulder on

annular surface

13,14 each

free parts

11,12, simultaneously, the annular connecting part that is used for metallic seal is to be produced on the annular chamfer 15 on one of described surface 13 and to be produced on ring-shaped step 16 on the apparent surface 14, it press described chamfering 15 by the edge and cooperate, fastening.

In the scheme shown in Fig. 7 and 8, the coupling of

parts

11,12 is also limited by relative shoulder with

annular surface

13,14, simultaneously, the annular connecting part that is used for metallic seal comprises annular wedge-like projecture 15 that is produced on one of described surface 13 and the toroidal throat 16 that is produced on the apparent surface 14, like this, wedge-like projecture 15 is with its most advanced and sophisticated also bottom of the described venturi 16 of clamping that leans on.

In the example shown in Fig. 9 and 10, can predict that coupling lays respectively at the end of connecting thread of main body 11 inboards with

annular surface

13,14 and the valve seal that is tightened on the main body overlaps 12 end.At this moment, the annular connecting part that is used for metallic seal comprises ring-shaped step 15 that is produced on one of described surface 13 and the chamfering 16 that is positioned on the apparent surface 14, when main body and the assembling of valve seal cover, interlocks in this way.

Equally, in the example shown in Figure 11 and 12, coupling lays respectively at the inboard of main body 11 and the end of valve seal cover with annular surface 13,14.Annular connecting part comprises flange or the annular boundary projecture 16 on the medial flange 15 and surperficial 14 that is produced on the surface 13 herein, and when two

parts

11 and 12 assemblings, described projecture cooperates with flange 15 in this way.

Very clear, other shape also can be selected and adopt in the attachment portion that is used for the metallic seal between the valve body parts, and target still according to the invention promptly, when described part is assembled, closely interlocks the metal parts of two complementations.

Claims

1. valve, its valve body is made up of two metal partss (11,12) that are tightened in together, described two metal partss of this valve body have annular surface (13,14) respectively, this annular surface is when component-assembled, be designed to be assembled together, it is characterized in that, on described two annular surfaces (13,14), have one or more annular connecting parts (15,16), these one or more annular connecting parts have the interlocking type geometrical shape, form metallic seal during assembling.

2. valve as claimed in claim 1, it is characterized in that, be designed to be limited by the relative shoulder that is produced on the described metal parts in order to described two annular surfaces (13,14) that are assembled together, this shoulder presses when parts (11, the 12) assembling of valve body vertically mutually.

3. valve as claimed in claim 1 or 2, it is characterized in that, the annular connecting part that is used for metallic seal comprises toroidal throat (15), the convergence side that this venturi had is made on one of described surface (13), also comprise the prismatic projecture (16) that is positioned at the annular on the apparent surface (14), this prismatic projecture is designed to be assemblied in the described venturi.

4. valve as claimed in claim 1 or 2, it is characterized in that, the annular connecting part that is used for metallic seal comprises the planar annular (15) that is produced on the inclination on one of described surface (13) and is positioned at ring edge (16) on the apparent surface (14) that this edge is designed to match with the planar annular of described inclination.

5. valve as claimed in claim 1 or 2, it is characterized in that, the annular connecting part that is used for metallic seal comprises the annular chamfer (15) that is positioned on one of described surface (13) and the ring-shaped step (16) on apparent surface (14), and this step is used edge and is fastened on the described chamfering.

6. valve as claimed in claim 1 or 2, it is characterized in that, the annular connecting part that is used for metallic seal comprises the annular wedge-like projecture (15) that is positioned on one of described surface (13) and at the toroidal throat (16) of apparent surface (14), the tip of described wedge-like projecture (15) is assemblied in the bottom of described venturi.

7. valve as claimed in claim 1 is characterized in that, the described annular surface (13,14) that is designed to mate together lays respectively at the inboard of one of metal parts and the end of another metal parts.

8. valve as claimed in claim 7, it is characterized in that, the annular connecting part that is used for metallic seal is included at least one ring-shaped step (15) on one of described surface (13) and the chamfering (16) on apparent surface (14), and described step (15) presses this chamfering and interlocking with the edge.

9. valve as claimed in claim 7, it is characterized in that, the annular connecting part that is used for metallic seal comprises medial flange (15) and the circular periphery projecture on apparent surface (14) that is positioned on one of described surface, and this projecture is designed to cooperate with described flange.